diff --git a/build_flags_template.sh b/build_flags_template.sh
index 8c1c2ab..395d0b4 100644
--- a/build_flags_template.sh
+++ b/build_flags_template.sh
@@ -24,5 +24,6 @@
 # export FLAGS="$FLAGS -DRESET_PIN=5"
 # export FLAGS="$FLAGS -DDHCP_RETRY_INTERVAL=60000"
 # export FLAGS="$FLAGS -DRESTART_LAN_ON_MQTT_ERRORS"
+# export FLAGS="$FLAGS -DW5500_CS_PIN=53"
  export FLAGS="$FLAGS -DPIO_SRC_REV="$(git log --pretty=format:%h_%ad -1 --date=short)
  echo $FLAGS
\ No newline at end of file
diff --git a/lighthub/main.cpp b/lighthub/main.cpp
index d31a027..5d3fafe 100644
--- a/lighthub/main.cpp
+++ b/lighthub/main.cpp
@@ -493,6 +493,11 @@ void onInitialStateInitLAN() {
 #endif
 
 #if defined(__AVR__) || defined(__SAM3X8E__)||defined(ARDUINO_ARCH_STM32F1)
+#ifdef W5500_CS_PIN
+    Ethernet.w5500_cspin = W5500_CS_PIN;
+    debugSerial.print(F("Use W5500 pin: "));
+    debugSerial.println(Ethernet.w5500_cspin);
+#endif
     IPAddress ip, dns, gw, mask;
     int res = 1;
     debugSerial.println(F("Starting lan"));